python - 如何让我的 Python 程序休眠 50 毫秒？

Question

如何让我的 Python 程序休眠 50 毫秒？

Answer 1

采用time.sleep()

from time import sleep
sleep(0.05)

Answer 2

请注意，如果您依靠恰好50 毫秒的睡眠时间，您将无法做到这一点。它只是关于它。

Answer 3

使用time.sleep()：

import time
time.sleep(50 / 1000)

请参阅 Python 文档：https ://docs.python.org/library/time.html#time.sleep

Answer 4

有一个名为“时间”的模块可以帮助您。我知道两种方法：

1. sleep

   Sleep（参考）要求程序等待，然后执行其余的代码。

   有两种使用睡眠的方法：

   import time # Import whole time module
   print("0.00 seconds")
   time.sleep(0.05) # 50 milliseconds... make sure you put time. if you import time!
   print("0.05 seconds")
   

   第二种方式不会导入整个模块，而只是休眠。

   from time import sleep # Just the sleep function from module time
   print("0.00 sec")
   sleep(0.05) # Don't put time. this time, as it will be confused. You did
               # not import the whole module
   print("0.05 sec")
   

2. 使用自Unix 时间以来的时间。

   如果您需要运行循环，这种方式很有用。但是这个稍微复杂一些。

   time_not_passed = True
   from time import time # You can import the whole module like last time. Just don't forget the time. before to signal it.
   
   init_time = time() # Or time.time() if whole module imported
   print("0.00 secs")
   while True: # Init loop
       if init_time + 0.05 <= time() and time_not_passed: # Time not passed variable is important as we want this to run once. !!! time.time() if whole module imported :O
           print("0.05 secs")
           time_not_passed = False
   

Answer 5

您也可以使用该Timer()功能来做到这一点。

代码：

from threading import Timer

def hello():
  print("Hello")

t = Timer(0.05, hello)
t.start()  # After 0.05 seconds, "Hello" will be printed

Answer 6

您还可以将 pyautogui 用作：

import pyautogui
pyautogui._autoPause(0.05, False)

如果第一个参数不是 None，那么它将暂停第一个参数的秒数，在这个例子中：0.05 秒

如果第一个参数是 None，而第二个参数是 True，那么它将为全局暂停设置休眠，该设置设置为：

pyautogui.PAUSE = int

如果您想知道原因，请参阅源代码：

def _autoPause(pause, _pause):
    """If `pause` is not `None`, then sleep for `pause` seconds.
    If `_pause` is `True`, then sleep for `PAUSE` seconds (the global pause setting).

    This function is called at the end of all of PyAutoGUI's mouse and keyboard functions. Normally, `_pause`
    is set to `True` to add a short sleep so that the user can engage the failsafe. By default, this sleep
    is as long as `PAUSE` settings. However, this can be override by setting `pause`, in which case the sleep
    is as long as `pause` seconds.
    """
    if pause is not None:
        time.sleep(pause)
    elif _pause:
        assert isinstance(PAUSE, int) or isinstance(PAUSE, float)
        time.sleep(PAUSE)